Magnetic Superstructure and Metal-Insulator Transition in Mn-Substituted Sr3Ru2O7

Details Magnetic Superstructure and Metal-Insulator Transition in Mn-Substituted Sr3Ru2O7 Magnetic Superstructure and Metal-Insulator Transition in Mn-Substituted Sr3Ru2O7

2009-05-29

arxiv.org/abs/0906.0035v1

Physics

Condensed Matter

Strongly Correlated Electrons

A high-resolution version can be found at http://www.physics.ubc.ca/~quantmat/ARPES/PUBLICATIONS/Articles/MnSRO_REXS.pdf

Scientific paper

We present a temperature-dependent resonant elastic soft x-ray scattering (REXS) study of the metal-insulator transition in Sr3(Ru1-xMnx)2O7, performed at both Ru and Mn L-edges. Resonant magnetic superstructure reflections, which indicate an incipient instability of the parent compound, are detected below the transition. Based on modelling of the REXS intensity from randomly distributed Mn impurities, we establish the inhomogeneous nature of the metal-insulator transition, with an effective percolation threshold corresponding to an anomalously low x<0.05 Mn substitution.

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